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authorChris--A <chris@genx.biz>2015-03-17 17:17:08 +1000
committerChris--A <chris@genx.biz>2015-03-17 17:17:08 +1000
commitdd1ec9920b8fd6b445cdcc943f53333990b34428 (patch)
tree39b5eb049080a2ed61e773a537e02ec503ddef9a /libraries/EEPROM/examples/eeprom_get
parent46e810cf0743a7fb29d41c02c5ab6c2d9e50685b (diff)
Added additional examples to EEPROM lib
Diffstat (limited to 'libraries/EEPROM/examples/eeprom_get')
-rw-r--r--libraries/EEPROM/examples/eeprom_get/eeprom_get.ino63
1 files changed, 63 insertions, 0 deletions
diff --git a/libraries/EEPROM/examples/eeprom_get/eeprom_get.ino b/libraries/EEPROM/examples/eeprom_get/eeprom_get.ino
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+++ b/libraries/EEPROM/examples/eeprom_get/eeprom_get.ino
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+/***
+ eeprom_get example.
+
+ This shows how to use the EEPROM.get() method.
+
+ To pre-set the EEPROM data, run the example sketch eeprom_put.
+ This sketch will run without it, however, the values shown
+ will be shown from what ever is already on the EEPROM.
+
+ This may cause the serial object to print out a large string
+ of garbage if there is no null character inside one of the strings
+ loaded.
+
+ Written by Christopher Andrews 2015
+ Released under MIT licence.
+***/
+
+#include <EEPROM.h>
+
+void setup(){
+
+ float f = 0.00f; //Variable to store data read from EEPROM.
+ int eeAddress = 0; //Location of the IP address inside the class.
+
+ Serial.begin( 9600 );
+ Serial.print( "Read float from EEPROM: " );
+
+ //Get the float data from the EEPROM at position 'eeAddress'
+ EEPROM.get( eeAddress, f );
+ Serial.println( f, 3 ); //This may print 'ovf, nan' if the data inside the EEPROM is not a valid float.
+
+ /***
+ As get also returns a reference to 'f', you can use it inline.
+ E.g: Serial.print( EEPROM.get( eeAddress, f ) );
+ ***/
+
+ /***
+ Get can be used with custom structures too.
+ I have separated this into an extra function.
+ ***/
+
+ secondTest(); //Run the next test.
+}
+
+struct MyObject{
+ float field1;
+ byte field2;
+ char name[10];
+};
+
+void secondTest(){
+ int eeAddress = sizeof(float); //Move address to the next byte after float 'f'.
+
+ MyObject customVar; //Variable to store custom object read from EEPROM.
+ EEPROM.get( eeAddress, customVar );
+
+ Serial.println( "Read custom object from EEPROM: " );
+ Serial.println( customVar.field1 );
+ Serial.println( customVar.field2 );
+ Serial.println( customVar.name );
+}
+
+void loop(){ /* Empty loop */ } \ No newline at end of file